vb.org Archive - How to disable Image Uploading v4.1.4

My objective is to offer users only one option for inserting images in a post -- and that is having them linked from a URL with tags -- like the old editor.

OK -- so first thing I do is disable the advanced Image Pop-up - according to note --- "Disabling this option will display the legacy from URL attachment dialog" this is good! Exactly what I want!

https://vborg.vbsupport.ru/external/2011/07/81.jpg

OK so I saved it and went to the editor to test.

I click on the insert an image icon and the correct legacy pop-up displays

https://vborg.vbsupport.ru/external/2011/07/82.jpg

I paste a URL

https://vborg.vbsupport.ru/external/2011/07/83.jpg

I hit the OK button --- and I get the invalid URL message and the image does not post

https://vborg.vbsupport.ru/external/2011/07/84.jpg

So how can I fix this? I have a music gear website that I just launched -- and I do not want to host a million pictures on my server -- so I need the legacy from URL attachment dialog to be the default -- and I need it to work.

Am I doing something wrong?
Is this a bug?
Is there a fix?

Thanks for taking the time and looking at this.

X vBulletin 3.8.12 by vBS Debug Information
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X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01085 seconds Memory Usage 1,726KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (2)bbcode_quote_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (1)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (4)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
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